Does Co-Witnessing Red Dots with Iron Sights Work?

Published on November 17, 2022
Duration: 7:44

This guide details the process of co-witnessing a red dot sight with iron sights, as demonstrated by Dorr, Director of Training at Tactical Hyve. It covers confirming iron sight zero, mounting the optic, aligning the red dot to the front sight post for an absolute co-witness, and validating the setup with live fire. This technique serves as a reliable field zero or starting point for optic adjustment.

Quick Summary

Co-witnessing aligns multiple aiming systems, like iron sights and red dots, on a firearm. Absolute co-witness places the red dot directly over the iron sights, while lower 1/3 co-witness positions the dot higher. This technique provides a reliable field zero, but fine-tuning with live fire is essential for optimal accuracy.

Chapters

  1. 00:00Introduction to Co-Witnessing
  2. 00:31Defining Co-Witnessing
  3. 01:36Confirming Iron Sight Zero
  4. 02:13Optic Comparison and Mounting
  5. 03:56The Co-Witnessing Process
  6. 05:49Live Fire Validation and Conclusion

Frequently Asked Questions

What is co-witnessing in firearms optics?

Co-witnessing means aligning multiple aiming systems, such as iron sights and a red dot, on the same firearm. This allows the shooter to use either system interchangeably, as they will both indicate the same point of aim and impact at a given distance.

What is the difference between absolute and lower 1/3 co-witness?

Absolute co-witness means the red dot sits directly on top of the iron sights. Lower 1/3 co-witness means the red dot is visible in the lower portion of the optic's window, with the iron sights positioned above it, offering a less obstructed view.

How do you properly mount a red dot sight for co-witnessing?

Mount the red dot optic as far forward on the receiver as possible without bridging onto the handguard. Ensure it is securely attached before proceeding with alignment and zeroing procedures.

Is co-witnessing a permanent zero?

Co-witnessing serves as an excellent starting point or field zero. While it provides a functional alignment, fine-tuning with live fire is always recommended to achieve the most precise zero for your specific firearm and ammunition.

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